新型桌面微型CT扫描仪用于直接数字化牙印记的准确性:一个比较的体外研究
Jiaying Gu1,2, Liqing Zhu2,3, Wenyue Yang1,2
1Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, Shanghai 200011, China.
Dentistry journal
|January 27, 2026
概括
一台新的桌面微型计算机断层扫描仪 (micro-CT) 扫描仪准确地直接将牙印记数字化. 这种新型的微型CT扫描仪的性能与高端的石膏模型系统相美,证明了它是一个有前途的数字牙科工具.
科学领域:
- 牙科技术 牙科技术
- 医疗成像医学成像
- 数字牙科数字牙科
背景情况:
- 数字印记对于现代牙科工作流程至关重要.
- 评估用于准确打印数字化的新技术至关重要.
- 微计算机断层扫描 (micro-CT) 提供了高分辨率成像潜力.
研究的目的:
- 评估一种新的桌面微型CT扫描仪的临床可行性,用于直接数字化牙印记.
- 将微型CT扫描的维度真实性和形态准确性与已有的光学扫描仪进行比较.
- 为了确定微CT对数字印记的可靠性.
主要方法:
- 一个经过修改的参考模型生成了印和石膏模型.
- 测试了四种数字化方法:印记微型CT (MCTI),印记光学扫描 (F8I),石膏模型光学扫描 (F8PM) 和石膏模型口内扫描 (IOSPM).
- 用线性距离测量尺寸准确性,通过3D表面偏差分析评估形态准确性.
主要成果:
- 在线测量的统计学上显著差异被发现跨方法 (p < 0.05).
- 与F8I相比,微CT (MCTI),F8PM和IOSPM显示出更高的维度真实性.
- 比F8I,F8PM和IOSPM,MCTI表现出明显更高的形态真实性 (较低的RMS偏差) 和可靠性 (较低的RSD).
结论:
- 新型的微型CT扫描仪提供了准确可靠的直接数字化牙印记.
- 它在数字化打印的性能相当于用先进的光学扫描仪扫描石膏模型.
- 这种微型CT技术为数字牙科工作流程提供了可行和有前途的替代方案.
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